It’s become a common sight in manufacturing. An employee, needing to tap a hole in a metal part, reaches for a standard hand drill instead of the tool designed specifically for the job—a tapper.

A cheap and effective ratcheting tap. Need to cut threads into a hole? A tool called a tap is what you need, and a hand-operated one like the one shown here to the side is both economical and ...

The best tool for tapping precise holes in metal parts and workpieces is—not surprisingly—a dedicated tapper. For years, hole tappers have been the go-to power tool in metalworking and manufacturing ...